1. Pilot
Air date: 2006-07-18 · 120 min
After a strange accident sidelines Eureka's sheriff, U.S. Marshal Jack Carter takes over the investigation into the mysterious phenomenon that led to the death of a resident. Carter learns about the secret purpose of the town while trying to re-establish a connection with his angry and bitter daughter, Zoe.
Open episode 1 ↗2. Many Happy Returns
Air date: 2006-07-25 · 60 min
Carter and the other citizens of Eureka attend the funeral of Susan and Walter Perkins. Much to their surprise, Susan makes a return to Eureka as a woman who is very much alive!
Open episode 2 ↗3. Before I Forget
Air date: 2006-08-01 · 60 min
Jack Carter accidentally shoots Henry while suffering from short-term memory loss, and the visiting scientist whose wife is Henry's old flame may hold the only clues into that incident and the increasing memory losses occurring both in town and at Global Dynamics just as an important military contract comes due.
Open episode 3 ↗4. Alienated
Air date: 2006-08-08 · 60 min
Spencer is apparently abducted by aliens and then returned to Earth the next day inside a crop circle. Also, the town is visited by Congressman Arnold Faraday, whose committee is responsible for Eureka's government funding.
Open episode 4 ↗5. Invincible
Air date: 2006-08-15 · 60 min
After a lab accident, Global Dynamics researcher Carl Carlson is expelled from Eureka due to lack of results. Later, it is discovered that the accident has unlocked hidden abilities in Carl. Meanwhile, Jack does his best to avoid a physical.
Open episode 5 ↗6. Dr. Nobel
Air date: 2006-08-22 · 60 min
After Fargo and Spencer accidentally activate a doomsday device, Carter must help Dr. Irwin Thatcher, an aging scientist, to shut down the machine.
Open episode 6 ↗7. Blink
Air date: 2006-08-29 · 60 min
Carter investigates an unusual car accident. Meanwhile, Stark is under stress to produce results on a project.
Open episode 7 ↗8. Right as Raynes
Air date: 2006-09-05 · 60 min
When the return of Eureka's star pupil causes problems all over town, Stark is forced to make a hard choice. Meanwhile, Carter attempts to track down Zoe who has run off with the former resident.
Open episode 8 ↗9. Primal
Air date: 2006-09-12 · 60 min
A nanotech experiment escapes from Global Dynamics. The project, which bridges the gap between computers and human brains, threatens to overrun Eureka when it begins duplicating Stark.
Open episode 9 ↗10. Purple Haze
Air date: 2006-09-19 · 60 min
Sheriff Carter and Zoe are the only ones unaffected when Eureka's residents begin to behave strangely, so father and daughter team up to search for the cause.
Open episode 10 ↗11. H.O.U.S.E. Rules
Air date: 2006-09-26 · 60 min
S.A.R.A.H.—the artificial intelligence that runs Carter's house—takes him and a group of residents hostage in an intervention to keep Carter in Eureka. Meanwhile, S.A.R.A.H.'s root program B.R.A.D. activates and turns the situation deadly.
Open episode 11 ↗12. Once in a Lifetime
Air date: 2006-10-03 · 60 min
Following an experiment on the artifact, Eureka warps to 2010. However, temporal anomalies begin to cause problems for Eureka, which leads to a shocking revelation.
Open episode 12 ↗